Man smb.conf says:
"inherit acls [...] The default behavior is to use the mode specified
              when creating the directory."
I assume that "mode" here means mode in the mkdir glibc call:
man 2 mkdir: "int mkdir(const char *pathname, mode_t mode);
[...] mode  specifies the permissions to use."

Samba has no way to determine what mode was used when a mkdir call was made
to make the directory. Noone has a way how to determine it. This is not stored
in the filesystem.

If I make a directory with mkdir with mode=700 and then set the permissions to
777, or make a directory with mode=777 directly, the result will be exactly the
same, with different mode specified on the mkdir call. So samba can't behave as
described in it's manpage and thus the manpage is wrong.

I am curious what the default actually is when I just proved it isn't what is
written in the manpage.

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